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Diprotodontia (/ d aɪ ˌ p r oʊ t ə ˈ d ɒ n t i ə /, from Greek "two forward teeth") is the largest extant order of marsupials, with about 155 species, [2] including the kangaroos, wallabies, possums, koala, wombats, and many others. Extinct diprotodonts include the hippopotamus-sized Diprotodon, and Thylacoleo, the so-called "marsupial ...
In the absence of postcranial fossils, the size of Nimiokoala has been estimated from measurements of its surviving teeth. It is estimated to have body length of about 25–30 cm (9.8-11.8 in), and a weight of about 3.5 kg (7.7 lb), one third the size of modern koalas and more than 10 times smaller than the largest known representative of Phascolarctidae (Phascolarctos yorkensis).
Teeth of a koala, from left to right: molars, premolars (dark), diastema, canines, incisors The koala has several adaptations for its low nutrient, toxic, and fibrous diet. [ 11 ] : 76 The animal's dentition consists of incisors and cheek teeth (a single premolar and four molars on each jaw) that are separated by a large gap (a characteristic ...
Madakoala is a genus of extinct phascolarctid marsupials with three known species, Madakoala devisi, Madakoala wellsi and Madakoala robustus.It is allied to extinct genera Invictokoala, Koobor, Litokoala, Nimiokoala, Perikoala, Phascolarctos and Priscakoala, along with Phascolarctos, the genus of the existing koala.
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Diprotodon is a marsupial in the order Diprotodontia, [d] suborder Vombatiformes (wombats and koalas), and infraorder Vombatomorphia (wombats and allies). It is unclear how different groups of vombatiformes are related to each other because the most-completely known members—living or extinct—are exceptionally derived (highly specialised forms that are quite different from their last common ...
Borungaboodie was significantly larger than any living potoroo, reaching a size comparable to that of a koala. Its lower jaw measured 30 percent greater than the living rufous bettong, and it was estimated to weigh almost 10 kg (22 lb). [4] It also had very robust teeth and jaws.
Mesiodens: Mesiodens is an extra tooth that grows behind the front teeth. A mesiodens may push the front teeth apart to make room for itself thus creating a gap between the front teeth. [3] 4. Skeletal discrepancy: Dental skeletal discrepancy can be a cause behind gap teeth. If the upper jaw grows more than the lower jaw, teeth on the upper jaw ...